“This is your chance to own the sound that defined heavy metal”: Reverb and Ashdown are selling bass amps used by Geezer Butler during rehearsals for Black Sabbath’s final show

[Update 10.08 – An earlier version of this story stated these amps were played by Geezer Butler at Back to the Beginning, Black Sabbath's final show. Butler has since posted on social media to say these amps were used in rehearsals and not during the show. Butler also says he is not involved in the sale of the amps.]

Ashdown and Reverb are teaming up to sell a collection of amps that Black Sabbath's Geezer Butler played during rehearsals for the band's epic finale, Back to the Beginning.

15 Head of Doom amps are available – which will be sold exclusively on Reverb – and each were hand-signed by Butler himself during those rehearsals. They also come with a certificate of authenticity from Ashdown’s Managing Director, Dan Gooday.

As of yesterday, fans can sign up to be notified as soon as the amps are available on Ashdown's Reverb Shop. The sale is set to go live on October 14 at 10:00 a.m. US Central Time.

“The end of an era. The sound of a legend,” says Reverb. “This is your chance to own the sound that defined heavy metal. Don’t wait, once they’re gone, they’re gone.”

Ashdown will also be rolling out made-to-order speaker cabinets that help channel the iconic bassist's sound.

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The 2x15” and 2x12” cabinets, dubbed the COD-212-8 and COD-215-8, will be handcrafted in the UK to the same specs as those at the final show. Rated at 300 watts RMS at 8 Ohms, the custom cabs will also feature a custom medal grill screen-printed with Geezer's artwork.

Butler's Head of Doom is also available online as a made-to-order option – with a £1,499 ($2,009) price tag. Specs-wise, it features a 9-band EQ, Sub-Harmonic generator, and a “Doom” control – alongside dual inputs for passive/active basses, footswitchable EQ settings, and DI, FX loop, line in/out, and dual Speakon outputs.

For more information, head to Reverb.

Back in July and following Ozzy's death, the Black Sabbath bassist shared his fondest memories of the Prince of Darkness in an exclusive interview with Guitar World – from their unlikely first encounter to Back to the Beginning.